2649 papers
Quantum gravity represents the frontier where the very large meets the very small, attempting to unify Einstein's theory of gravity with the strange rules of quantum mechanics. This field explores the fundamental fabric of spacetime, seeking to understand how the universe behaves at its most extreme scales, from the heart of black holes to the moment of the Big Bang. Because these concepts often involve complex mathematics, they can feel distant to non-specialists, yet they hold the key to a complete picture of physical reality.
At Gist.Science, we bridge this gap by processing every new preprint in this category directly from arXiv. Our team provides both plain-language explanations and detailed technical summaries for each paper, ensuring that groundbreaking research is accessible to everyone, from curious students to seasoned researchers. Below are the latest papers in quantum gravity, offering fresh insights into the nature of our cosmos.
This paper introduces a new linear analysis framework that decomposes deviations in I-C and I-Love neutron star universal relations into an equation-of-state-dependent factor and a structure-dependent factor, demonstrating that the latter's smallness is the origin of the observed universality.
This paper demonstrates that neglecting the redshift evolution of the Schechter function in galaxy luminosity distributions introduces biases in Hubble constant () measurements from dark sirens, highlighting the necessity of incorporating evolving galaxy population models to accurately constrain both and merger rate parameters.
This paper proposes and constrains a generalized "Power law -Starobinsky" inflation model by combining power-law and -Starobinsky features, finding that it is mildly favored by CMB and LSS observations and remains consistent with current bounds.
Using numerical relativity to evolve the Einstein equations, this study demonstrates that while scalar perturbations during the kination epoch follow perturbative predictions in the sub-horizon limit, they exhibit rich non-linear dynamics in the super-horizon regime that could lead to primordial black hole formation and potentially reheat the universe.
This paper introduces a novel Gaussian process-based method implemented in the `mochi_class` solver to generate stable Horndeski gravity models that produce weak gravity and suppress Large-Scale Structure growth, demonstrating the existence of broad "islands" of such behavior even under varying expansion histories and fifth-force conditions.
This paper presents a geometrical formulation of nonlinear electrodynamics without birefringence, demonstrating that linear perturbations evolve on a field-dependent optical metric, thereby enabling the application of quantum field theory techniques and facilitating the development of analogue models using nonlinear metamaterials.
This paper analyzes the dynamics of charged test particles in a singular, horizonless spacetime derived from the Einstein-Maxwell-Scalar framework, demonstrating how the system transitions from a hydrogenic-like weak-field regime with curvature-corrected thermodynamics to a hard-wall confined state near the outermost curvature singularity.
This paper introduces a generalized mass-horizon relation for cosmological horizons that serves as a unified framework for deriving various extensions of Bekenstein entropy, ensuring consistency with thermodynamic laws and the holographic principle through the application of the Clausius relation and Hawking temperature.
This study establishes an empirical relation between the binding energy of compact stars and the frequencies of their non-radial and oscillation modes for hadronic matter, while demonstrating that hybrid equations of state with sharp phase transitions cause deviations from this quasi-universal correlation.
This paper presents a framework for detecting gravitational-wave signals lensed by cosmic strings using a full-wave transmission factor to distinguish their unique diffraction and interference patterns from point-mass lensing, thereby establishing a method to probe high-energy physics and constrain cosmic string tension.